Testing-valve.



(No Model.)

E. HAFNER.

TESTING VALVE.

(Application filed Apr. 30, 1900.:

Jay. 4.

Patented July 2, 190i.

2 SheetsSheet l.

-Zkaeniar No. 677.569. Patented July 2, l90l. E. HAFNEB.

TESTING VALVE.

(Applicatiun filed Apr 30, 19010.) (No Model.) 2 Sheets-Sheet 2.

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UNITED STATES PATENT FFIQE.

TESTING-VALVE.

SPECIFICATION forming part of Letters Patent No. 677,569, dated July 2, 1901.

Application filed April 30, 1900. Serial No. 14,903. (No model.)

To aZZ whom, it may concern.-

Be it known that I, EMILE HAFNER, a subject of the German Emperor, residing at 12 Zimmerleutgasse, in the city of Miilhausen in Alsace,Germany, have invented a certain new and useful Testing-Valve,of which the following is a specification.

This invention has reference to testingvalves for indicating the water-level in boilers and the like, the device being so arranged that it combines the functions of the two or three testing-valves, as employed heretofore in boilers, in one.

My invention is illustrated in a preferred form of construction, by way of example, in the accompanying drawings.

Figure 1 is a longitudinal section of that part of the boiler embodying my invention. Fig. 2 is a front view on an enlarged scale.

In the drawings, a is a vertical tube, to the outer wall of which is fixed the indicator j and into which is fitted the spindle f, to the upper extremity of which is fastened the handle g and which may be screwed up and down by turning the said handle so as to open or close the vent a, which communicates with the exit-piping E. The said shaft a is attached at a right angle to a hollow horizontal shaft Z), turning within a stufiing-box d, which is fitted into the walls of the boiler at Z. The hollow shaft 7') is pierced at a certain angle by a straight inclined tube 0, screwed into it, the mouth of which is at the water-level and at the same height with the indicator j. The said tube a will describe the frustum of a cone when the entire system is rotated about its horizontal axis a: 00 by turning the handle 9, as shown in Fig. 2 of thedrawings. The bore of the hollow shaft 17 is in communication with the exit-port E, which may be either vertical or horizontal and allows to drain the system. The shaft 1) is secured in the wall of the boiler by a nut 19 and a suitable washer and is supported by the standards y. The indicator j plays on a graduated scale k,which is in some way connected to the wall of the boiler.

7L and dare recesses around the hollow shaft 1), in which the dirt can accumulate without interfering with the rotation of the shaft.

71, designates an extension on the inner end of the exit-plug E to facilitate the application of said plug to the outer end of the shaft 1), and the reference-letter z" designates a valvescrew closing a supplemental outlet in the shaft 6.

s is a safety-screw whose shaftm serves to fix the position of the device by engaging with indentations on the said rotatable hollow shaft 6.

The device operates as follows: In order to determine the water-level, the spindle f'is first turned around its axis by means of the handle g, which will allow the dirt and the Water contained in the pipes to drain out and clean the connections. Then the whole system is turned. around the axis x w, as shown in Fig. 2 of the drawings, until the water from the boiler will flow out at E. The position of the indicator j will then register the exact water-level in the interior of the boiler.

With this device it is possible by giving simply a twist to the handle g to determine the exact level in boilers and in any other vessel filled with a liquid. that the same device may also be used with advantage for decanting liquids from a pre cipitate, the liquid flowing out easily without disturbing the precipitate that might be at the bottom of the vessel.

I am aware that rotatable gage valves or cocks communicating with a pipe at the inside of the boiler are old and that the handle of the cock has been used for simultaneously opening the exit-port of the said rotatable valve and for turning the same. I therefore do not broadly claim the arrangement of such test or gage valves; but

What Iclaim, and desire to secure by Letters Patent of the United States, is-=- 1. The combination with a boiler or other liquid-receptacle, of a nut arranged within an opening in the wall of the receptacle; a hollow shaft rotatably supported within said nut and provided with an outlet, an inclined tube within the boiler communicating with an in clined opening in the inner end of said shaft, a pipe communicating with the outer end of said shaft; a screw-valve within said pipe provided with a handle; an index-finger carried by said pipe; a stationary scale and means for securing the rotatable shaft at different positions.

2. The combination with a boiler, of a nut It is apparent arranged within an opening in the boiler-wall and having internal annular recesses; a ro-.

tatable hollow shaft supported Within the nut and provided with a discharge-plug a hollow pipe communicating with the outer end of the shaft; 2. screw-Valve Within said pipe having a handle by means of which the shaft is turned; an inclined pipe Within the boiler communicating with an inclined opening at 10 the inner end of the shaft; a scale and index;

and means for securing the shaft at different positions.

In witness whereof I have hereunto set my hand and attached my name in the presence of two witnesses.

EMILE HAFNER.

\Vitnesses:

ERNEST SoHLossER, J ULES SIMON. 

